baber/WOPTO huggingface dataset:
Patent GB-1491874-A (GB)
Title: Code recognition system
IPC: G06K7/10
Filed: 1974-11-25
Abstract: 1491874 Code reader DATA GENERAL CORP 25 Nov 1974 [5 Dec 1973 (2)] 51010/74 Heading G4M A reader for markings having two possible levels, e.g. bar codes or magnetic markings, produces pulses at each transition between the levels, forms signals representing the distance between successive pairs of alternate pulses to produce four such signals and compares successive pairs of signals to produce three comparison signals. The data (e.g. bar codes, Fig. 1, not shown) is read, e.g. using an optical scanner and a signal representing the data (Fig. 8a) is fed to a differentiator 22 which forms pulses at every transition between the two levels (Fig. 8b). The differentiated signals are fed to two comparators 23, 24 where they are compared with threshold signals and form signals representing white to black transitions and black to white transitions respectively. The latter signals reset respective integrators 25, 26 which feed respective analogue switches 27, 29 and respective sample and hold circuits 28, 31. The outputs from the analogue switches are fed to difference amplifiers along with a small value so that the outputs of the difference amplifiers are the switch value plus 8 and the switch value minus #. These two values are fed to three comparators 35, 36, 37. The sample and hold circuits store the maximum values produced by their respective integrators in the previous time period, i.e. circuit 28 stores value X (Fig. 8e) while the analog switch passes the signal integrated in period T2. At the end of T2 the value X is modified in the difference amplifiers to form the values X + 8 and X - 8. The value in circuit 28 is modified by amplifiers 38, 39, 41 to X, 2X/3, 3X/2 respectively and is compared with the values X+#, X-#. An output occurs at the comparator receiving from amplifiers 38, 39, 41 an input having a value between X + # and X - #. Each comparator feeds a respective shift register (Fig. 6, not shown). The comparison is repeated for periods T3/T2 and T4/T3. The values in the shift registers are decoded to identify the marking.
Patent GB-1255371-A (GB)
Title: Blended terpolymer resins and their preparation
IPC: C08L55/02
Filed: 1969-10-17
Abstract: 1,255,371. Resin blends. DART INDUSTRIES Inc. 17 Oct., 1969 [25 Oct., 1968], No. 51018/69. Headings C3G and C3P. A composition comprises at least 50% by weight of an acrylonitrile-butadiene-styrene graft polymer and up to 50% by weight of a methacrylate-butadiene-styrene graft polymer.
Patent GB-1001017-A (GB)
Title: Sintered rubbing contact material and method for producing same
IPC: H01H1/0237
Filed: 1963-12-30
Abstract: A sintered compact comprising lead oxide and a matrix of a metal such as copper or silver with a free energy of oxide formation which is more positive than lead oxide is formed by pressing and sintering a powder mixture of the components. Additives such as SiO2, Al2O3, Bi2O3, CrO3, V2O5, As2O5, MoO3, WO3, Sb2O3, B2O3, TiO2, SnO2, P2O5, Fe3O4 and Cu2O may also be included and the oxide content preferably constitutes 5-20% by weight of the compact.  The copper or silver powder is preferably mixed with a lubricant such as stearic acid prior to blending with the lead oxide and the compacted mixture may be preoxidized by heating to 700-1000  DEG F. prior to sintering in a non-reducing atmosphere such as argon or nitrogen at 1400-1700  DEG F.  The sintered body may also be heated in an oxidizing gas to reoxidize any reduced lead and finally coined to final size, shape and density. Alternatively the powder may be sintered in a reducing gas and then re-oxidized.  In another embodiment a steel backing strip plated with copper or silver is coated with the powder mixture, the composite is preoxidized, sintered, rolled to a density of 80-95% of theoretical and then resintered at 1400-1700  DEG F.  It is finally vacuum impregnated with a lubricant to form a sintered rubbing material for use as bearings, piston rings, seals and clutch plates. Specification 963,266 is referred to.
Patent GB-1406827-A (GB)
Title: Mounting of rotatable impeller shafts
IPC: F04D29/10
Filed: 1972-11-08
Abstract: 1406827 Centrifugal pumps K D REID 8 Nov 1972 51415/72 Heading F1C An impeller shaft 1 is journalled in bearings 8, 9 carried by spaced plates 6, 7, the plate 7 nearer the impeller 2 being secured to a tubular housing extension 4 which extends from the impeller housing 3, a liquid seal 10 being interposed between the impeller and the bearing 9. The seal may comprise a stuffing box free to float transversely of the shaft axis and having a spring-pressed gland or may comprise a self-lubricating seal ring of carbon or synthetic material which is urged against the underside of the plate 7 by a resilient tubular bellows of rubber or synthetic material which is secured at one end to the seal and at the other end to the impeller shaft. Pressure build-up in the extension 4 is prevented by a relief duct 24 which can also serve as a second inlet at high delivery flow or if the main inlet 3a is blocked.
Patent GB-1471547-A (GB)
Title: Radial tyres
IPC: B29C67/00
Filed: 1974-11-28
Abstract: 1471547 Moulding tyres P J KENT and J E PHILLIPS 28 Nov 1975 [28 Nov 1974] 51585/74 Heading B5A In a process for making a radial ply tyre, a tread band 2 of precured elastomeric material is placed in the ring mould 1 and plies 11 are circumferentially located on the band; an uncured tyre carcass 4 is then positioned within the band and forced into contact with it whereby the assembly is bonded together and cured. Side wall plates 6 are clamped to the ring mould and are associated with bead plates 5. Gas, e.g. superheated steam is fed under pressure into a bag 7 via an inlet 8.
Patent GB-1479044-A (GB)
Title: Fusible solid compositions capable of setting to an infusible state at higher temperatures
IPC: C08F299/00
Filed: 1974-11-29
Abstract: 1479044 Moulding compositions that are solid at room temperature LUBRIZOL CORP 29 Nov 1974 [10 Dec 1973 28 Aug 1974] 51820/74 Headings C3P and C3R A composition which is solid at room temperature, liquefies on heating to a temperature between 50 and 150 C., solidifies on cooling, and is chemically converted to an infusible state at a higher temperature can consist of an unsaturated polyester and a solid comonomer. Specified monomers are N-substituted (meth) acrylamides, 2-methyl-2-butenoic acid, 3-acrylamido-3-methyl butanoic acid, crotonic acid, dihydroabietyl fumarate, allyl urea, N-vinyl succinimide and tribromophenyl allyl ether. Other systems referred to are mixtures of polyols and polyisocyanate sources such as diaminimides and bis-(N,N-diphenyl ureas).
Patent GB-1445164-A (GB)
Title: Braking apparatus
IPC: B61H15/00
Filed: 1973-11-09
Abstract: 1445164 Brake transmitting-mechanism; slack adjusting WESTINGHOUSE BRAKE & SIGNAL CO Ltd 14 Aug 1974 [9 Nov 1973] 52014/73 Heading F2E In braking-apparatus of the kind in which a brake actuator 1, Fig. 1, is displaceably mounted between first and second linkages 2, 3 so that a brake force exerted by the actuator 1 through the first linkage 2 to a first brake 6 is reacted through the actuator 1 and the second linkage 3 by a second brake 7, the actuator 1 is provided with resilient means 10, Figs. 1, 2, which, on release of the brake force, tends to return the actuator 1 to a predetermined position in relation to a mounting structure 12, 11. As shown, the actuator 1 is an air-operated or air-and-spring cylinder and the two linkages are pivoted at 4, 5, to a fixed part of a rail vehicle. The device 10 is connected to the cylinder 1 and is associated with a further fixed part 11 of the vehicle and a frictionally-coupled mounting including an arm 12. The cylindrical casing 21 of the resilient means 10, and hence the actuator 1, is urged towards a central position by two springs 23, 24 each engaging one side of a "piston" 22 integral with a normally-stationary spigot-and-stud 25, 26, partly extending through a slot 27 in cylinder 1. The clearance Z between spigot 25 and one end of the slot 27 is proportional to the required clearance Y between one brake block 7 and its associated wheel. When block wear is not excessive, spigot 25 meets the end of slot 27 just as block 7 contacts the wheel. When the clearance is greater than Y because of excessive wear, casing 21 needs to move rightwards more than clearance Z, so it forces stud 26 along a slot 32 of arm 12 to a new position against the resistance of pads 28, 29 backed by Belleville washers 30, 31. In the release position, the springs 23, 24, absorb shock loads and thus prevent movement of stud 26 along the slotted arm 12.
Patent GB-1500709-A (GB)
Title: Abrasives
IPC: C04B35/5831
Filed: 1974-12-02
Abstract: 1500709 Abrasive products GENERAL ELECTRIC CO 2 Dec 1974 [17 Dec 1973] 52021/74 Heading C4V An abrasive body is obtained by (a) mixing hexagonal boron nitride (HBN) powder with a powdered metallic phase to produce a homogeneous mixture, the atomic content of the metallic phase consisting essentially of aluminium atoms, atoms of chromium or manganese, and atoms of one or more of iron, cobalt and nickel, the weight per cent of HBN being in the range 10-50% by weight; (b) pressing the mixture into some predetermined shape; (c) simultaneously subjecting the mixture to an operating temperature and operating pressure within the stability region of cubic boron nitride (CBN) defined by the use of the selected metallic phase, the operating temperature being high enough to render molten some of the metallic phase, the period of time of simultaneous temperature and pressure application being sufficient to permit dissolution of all the HBN in the molten metallic phase and the precipitation of CBN crystals therefrom; (d) cooling the resulting CBN alloy system to about room temperature while maintaining the operating pressure; (e) reducing the pressure to atmospheric pressure and (f) recovering the preshaped abrasive body consisting essentially of CBN crystals distributed in a transition metal-aluminium alloy matrix. The aluminium atoms may be added as aluminium metal or may be derived from AlN or Al 4 C 3 . The minimum pressure for the conversion of HBN to CBN has been found to be about 45-47 kb regardless of the specific metallic phase employed. Reference has been directed by the Comptroller to Specification 1,391,665.
Patent GB-1287503-A (GB)
Title: Improvements in or relating to a method for establishing a negative pressure in a hermetically sealed container containing a fillable material and improved container construction for the performance of the aforesaid method
IPC: B65B31/02
Filed: 1970-11-03
Abstract: 1287503 Vacuum formed packages NESTLE SA 3 Nov 1970 [4Nov1969] 52139/70 Heading B8C In a method of establishing a negative pressure in a hermetically sealed container containing a finable material 2 so that, upon opening the container, the contents 2 do not tend to spray out, the container 1 having a concave bottom 3 and an upper flange 4 to which a cover 5 is hermetically sealed, is placed, with a number of similar containers, in a closed evacuation chamber 6 which is then evacuated so that the pressure in the container becomes increasingly greater than that surrounding the container and the floor 3 tends to straighten. As soon as the deformation of the floor is so large that the elastic limit of the container material has been exceeded, the negative pressure is removed, the container remaining permanently in its expanded condition so that the volume V 2  is increased with the consequent production of a negative pressure within the container. The container 1 may be formed of deep-drawn hard foil and the packaged material may be liquid, powder, or a mixture of solid and liquid materials. Some of the parameters to be considered when forming a negative pressure in a container are the properties of the container, the size of the desired empty volume, and the duration and amplitude of the vacuum provided in the compartment 6.
Patent GB-1372905-A (GB)
Title: Apparatus for tesring data modems which simultaneously transmit  and receive freuquency multiplexed signals
IPC: H04J1/16
Filed: 1972-11-14
Abstract: 1372905 Digital transmission; testing MILGO ELECTRONIC CORP 14 Nov 1972 [15 Nov 1971] 52484/72 Heading H4P In a testing arrangement for a FSK duplex system in which sending and receiving operates in different frequency bands, test signals are transmitted to a line where they are translated to the other band and returned for checking. At a terminal signals from a test pattern generator 20 are modulated into FSK form and transmitted through a hybrid coupler 26 to a balanced modulator 24 also receiving A.C. from a signal generator 28 translating them to the other frequency band which are passed through filter 30 and returned through hybrid coupler 26 to the receiver portion where they are analysed at 22. The hybrid coupler 26 includes directional amplifiers (70, 72) connected in an arrangement illustrated in greater detail in Fig. 4 (not shown). Signals formed in generator 28 may originate as a stepped waveform produced by a set of resistors cyclically switched at the input of an amplifier (47) (see Figs. 2 and 3, not shown).
Patent GB-1414335-A (GB)
Title: Electrophotographic processing
IPC: G03G15/10
Filed: 1972-11-15
Abstract: 1414335 Developing electrostatic latent images RICOH KK 15 Nov 1972 [7 Dec 1971] 52655/72 Heading G2H Electrostatic latent images on drum 2 are developed by a liquid developer pumped between the drum and a developing electrode 3 and a layer of a polymer which may be a silicone resin, polytetrafluorethylene, a polyurethane, polypropylene, polyethylene, a polyester, a nylon, poly (vinylidene chloride), poly (vinyl chloride) a polycarbonate or cellulose acetate prevents the toner components of the developer from adhering to the electrode surface.
Patent GB-1206436-A (GB)
Title: Improvements in or relating to rotary-piston engines, pumps, compressors and motors
Inventor: ROY JEAN-FRANCOIS GEORGES
IPC: F01C1/28
Filed: 1967-11-21
Abstract: 1,206,436. Rotary-piston machines. J.F.G. ROY. Nov.21, 1967 [Nov.25, 1966], No.52926/67. Heading F1F. A rotary-piston I.C. engine has rotary-pistons R 1 , R 2 , R 3  co-axial with parallel intersecting cylindrical-cavities S 1 , S 2 , S 3  each of the outer pistons having an eccentric portion carrying a sealing element 5a or 5b and the central piston having sealing elements 8 to prevent direct communication between a port 11a for fuel-air mixture and an exhaust port 12a. The pistons are synchronously coupled to an output shaft 14 so as to revolve unidirectionally by gears 15, 16a, 16b. The piston R 1  compresses the mixture while the piston R 2  is driven by the combustion products. The central piston transfers the compressed mixture from the cavity S 1  to the cavity S 2  wherein it is ignited by a spark plug 13. Impeller blades 18 on the gear 15 effect a flow of cooling fluid across fins 17 internally of shafts 14a, 14b for the outer pistons. The machine may be adapted to operate as a pump compressor and when so adapted have only two of the pistons that are mutually adjacent.
Patent GB-1403403-A (GB)
Title: Method of forming a sleeve usable for heat-shrinking onto a glass container
IPC: B29C48/00
Filed: 1972-06-30
Abstract: 1403403 Sleeved containers OWENSILLINOIS Inc 30 June 1972 [30 June 1971] 53059/74 Divided out of 1403401 Heading B8D [Also in Division B5] The subject matter is as disclosed in the Specification 1,403,401, but the claims relate to stretching, printing, and cutting a strip from a thermoplastics sheet, which strip is then cut into blank lengths and wound into tubular form to form a heat-shrinkable tube.
Patent GB-1203424-A (GB)
Title: Polyurethane-polyureas
Inventor: STRASSEL ALBERT PIERRE
IPC: C08G18/16
Filed: 1967-11-22
Abstract: 1,203,424. Polyurethane-polyureas. UGINE KUHLMANN. 22 Nov., 1967 [23 Nov., 1966], No. 53152/67. Addition to 1,160,042. Headings C3C and C3R. Solid-flexible polyurethane-polyureas having a cellular portion and a compact elastomeric skin of at least 0.5 mm. thickness and representing 0.1 to 90 volume per cent of the polyurethanepolyurea, and being free of a transition zone of different density separating the cellular portion and the elastomeric skin are prepared by (1) mixing a polyisocyanate, a polyether or polyester polyol having an equivalent molecular weight of more than 1000 at least one "quickacting diamine" (which is defined as being an aromatic diamine containing no negative group in the o-position to the amino group or a primary or secondary aliphatic amine), a catalyst for the polyurethane-polyurea reaction and a non-aqueous blowing agent, the diamine having been previously dissolved in the polyol prior to mixing, (2) pouring the resulting mixture into a mould, the components and temperature of the mixture being chosen to give a creaming time of less than 20 seconds and an expansion period of less than 60 seconds and (3) removing the polyurethane-polyurea from the mould after completion of the expansion. The quick-acting diamine may be a phenylene diamine, tolylene diamine, naphthylene diarnine, hexamethylene diamine, 2,2,4 - trimethylhexamethylene diamine, o - tolidine, methylene dianiline, piperazine or 2 - methyl piperazine. The mould is suitably at a temperature of 20‹ to -30‹ C. In a typical example a propoxylated and ethoxylated trimethylolpropane is mixed with otolylene diamine, triethylene diamine and lead naphthenate and to this mixture is added a mixture of crude toluene diisocyanate and trichloromonofluoromethane. The resulting mixture is poured into a metal mould with an interior silicone coating to form the polyurethanepolyurea material.
Patent GB-1412168-A (GB)
Title: Penicillins and production thereof
IPC: C07D499/12
Filed: 1973-11-16
Abstract: 1412168 α-Alkoxysulphonyl-benzylpenicillins TAKEDA YAKUHIN KOGYO KK 16 Nov 1973 [9 July 1973 13 July 1973] 53279/73 Heading C2C Novel α - alkoxysulphonyl - benzylpenicillins of the general formula wherein R is a C 6-14  branched alkyl group, and pharmaceutically acceptable salts thereof are prepared by reacting 6-aminopenicillanic acid or a salt or easily-cleavable ester thereof with an α - alkoxysulphonyl - phenylacetic acid of the general formula or a reactive derivative thereof (e.g. the acid chloride, prepared by reacting the acid with thionyl chloride) and, in the case where an easily-cleavable ester of 6-amino penicillanic acid is used, removing the easily-cleavable ester-forming group, followed optionally by salification of the product. Pharmaceutical compositions having antimicrobial activity comprise, as active ingredient, an α-alkoxysulphonyl-benzylpenicillin of the first general formula above or a pharmaceutically acceptable salt thereof, together with a physiologically acceptable carrier or diluent.
Patent GB-1254703-A (GB)
Title: Apparatus for use in playing a game
Inventor: LONBAY ERNEST LEISER
IPC: A63F3/00
Filed: 1968-11-11
Abstract: 1,254,703. Indoor games. E. L. LONBAY. 10 Feb., 1970 [11 Nov., 1968], No. 53357/68. Heading A6H. Apparatus for playing a game comprises a playing surface showing a plurality of interconnecting routes, a first playing piece, representing a tourist guide, for each player and an associated playing piece representing a tourist, a plurality of cards each of which indicates an assignment to conduct a tourist between a first location and a second location. The first playing piece is moved from a starting point to the first location where it is joined by the associated piece, the two pieces being moved together between the first and second locations.
Patent GB-1218463-A (GB)
Title: Electrical contact sockets
Inventor: PAULLUS CLARENCE LEONARD
IPC: H01R13/52
Filed: 1968-05-02
Abstract: 1,218,463. Two-part couplings. AMP Inc. 2 May, 1968 [23 May, 1967; 4 Aug., 1967], No. 53366/69. Divided out of 1,218,462. Heading H2E. The subject-matter of this Specification is the same as that of the parent Specification, but the claims are directed to the socket contacts formed from a laminated metal strip.
Patent GB-1135601-A (GB)
Title: Improvements in register resetting means
IPC: G07B17/00
Filed: 1965-12-16
Abstract: 1,135,601. Locks. PITNEY-BOWES, Inc. 16 Dec., 1965 [24 Dec., 1964], No. 53411/65. Heading E2A. [Also in Divisions G4 and G6] A lock 4 for use in resetting the numeral wheels of a register of a postage meter (see Division G4) comprises a plug 5 rotatable within a barrel 6. The plug is normally blocked against rotation by pairs of spring biased lock pins 7. Plug 5 is bolted to a cylinder 21 which is connected through gears 22, 24 and shaft 14 to resetting wheels. On turning the key 8 through a given angle a slot 27 in cylinder 21 is aligned with pin 26 allowing the plug 5, barrel 6, cylinder 21, gears 27, 24 and shaft 14 to move longitudinally so that the resetting wheels 13 may engage various numeral wheels. Key 8 is then rotated, said rotation being transmitted via gears 22, 24 and shaft 14 to the resetting wheels.
Patent GB-1134190-A (GB)
Title: Bowling pin distributing apparatus
IPC: A63D5/08
Filed: 1965-12-16
Abstract: 1,134,190. Bowling alleys. AMERICAN MACHINE & FOUNDRY CO. 16 Dec., 1965 [15 March, 1965], No. 53504/65. Heading A6D. A bowling pin handling apparatus for use with a pin spotting machine comprises a storage magazine 44 and a pin distributing conveyor D which can be transferred back and forth above the pockets of the magazine and the delivery end of the conveyor having a carriage capable of being extended or retracted so that pins may be delivered from the conveyor to the pockets of the magazine. The longitudinal movement of the carriage and the transverse movement of the conveyor D are controlled by cams on either side of gear 166.
Patent GB-1387680-A (GB)
Title: Shock-resistant electro-magnet
IPC: D04B15/78
Filed: 1972-11-23
Abstract: 1387680 Knitting machines H STOLL G STOLL E STOLL E STOLL J STOLL A STOLL R E STOLL and M STOLL 23 Nov 1972 [10 Dec 1971] 54153/72 Heading D1C [Also in Division H1] A armature of magnetic material for a shock resistant electromagnet is subdivided into a head of small mass resiliently connected to a body of larger mass; the face of the former being attracted by magnetised poleshoes or an electromagnet core.  The armature of larger mass is constituted by a bolt 111 (Fig. 2) movable in either sense 15 carrying a piston 16 of light non magnetic material e.g. plastics in a concentric cylinder 17 of the same; retained by a circumferential rib engaging an inwardly extending rim. A tubular shank 102 of an armature plate 110 of smaller mass enters the cylinder and contains a compression spring 102 constituting the resilient coupling which is compressed when the plate 110 abuts the electro-magnet 18 after mutual displacement with bolt 111. The cylinder 17 is pivoted within limits to secure flush application of plate 110, and with the spring affords protection against impact stresses on the bolt. In a modfication the armature head is coupled to the body of larger mass by a resilient mass of rubber adherent or vulcanised to the coupled members and stressed in tension or compression (Fig. 3 not shown): Composite armatures of the kind described may be utilized in conjunction with electromagnets for the operation of needle selection in knitting machines; wherein a cam bar movable over a bed engages sliding shoes attached to armature bolts retained against the cam bar on demagnetisation by a compression spring, whereby the armature head is respectively presented to the electromagnet which also incorporates a permanent magnet. Thus energisation weakens the standing field to release the spring biased armature head, and impact is reduced by the resilient connection to minimise false release (Figs. 4, 5 not shown).